Qasr Bshir: Roman fort in the desert of Jordan. Mobene, as it was called in Antiquity, is the best-preserved Roman fort in the Middle East.
The central gate, which faces the shallow valley to the southwest, is flanked by two towers that are about half as large as the corner towers. The building inscription of the fort, a rarity in this part of the limes, survives and mentions the emperors of the First Tetrarchy:
This inscription allows us to date the construction of the fort to 293-305, when the Romans constructed more forts in this sector of the frontier. Qasr Bshir was in use throughout the fourth century and may have been abandoned in the early fifth century. It was certainly reused in the Umayyad age, because there are traces of a machicolation above the entrance, an invention commonly to postdate the Arabian conquests. The courtyard, which has two cisterns, is on all sides surrounded by rooms, twenty-three in number, which have been identified as stables. There was a second story, where the soldiers must have slept. The roof of these barracks reached the same height as the rampart walk, creating a really wide fighting platform. One room, opposite the main gate, may have been the headquarters, some kind of sanctuary, or both. The purpose of the Castra Praetorium Mobene is a bit of a mystery. Because each of the twenty-three stables was used by three horses, and because a cavalry unit of frontier soldiers appears to have numbered between 120 and 150 men, Qasr Bshir cannot have been the base of a full-strength unit. It is remarkable that Mobene is not mentioned in the Notitia Dignitatum and that the building inscription does not refer to the name of the unit or its commander. Perhaps it was not a normal fort, but a place where the provincial governor resided when he needed to discuss matters with the nomads. (There are several tribal graffiti near the entrance.) Alternatively, the castle was used by horsemen patrolling this sector of the Roman frontier, soldiers belonging to a unit that was, according to the Notitia Dignitatum, stationed in nearby Naarsafari (modern Wadi Afaris), the Ala Secunda Miliarensis. These men may have visited Mobene during their patrols only, and may have lived somewhere else.
Optimis maximisque principibus nostris Caio Aurelio
Valerio Diocletiano Pio Felici Invicto Augusto et
Marco Aurelio Valerio Maximiano Pio Felici Invicto Augusto et
Flavio Valerio Constantio et Galerio Valerio Maximiano
nobilissimis Caesaribus Castra Praetorii Mobeni fossamentis
Aurelius Asclepiades praeses provinciae Arabiae
In honor of our best and greatest rulers, Gaius Aurelius Valerius Diocletian, our pious, lucky, and unconquered emperor, and Marcus Aurelius Valerius Maximian, our pious, lucky, and unconquered emperor, and to Flavius Valerius Constantius and Galerius Valerius Maximianus, our noblest caesars, has Aurelius Asclepiades, praeses of the province of Arabia, ordered to build Castra Praetorium Mobene from its foundations.note[CIL 3.14149]
- D.B. Campbell, Roman Auxiliary Forts: 27 BC - AD 378 (2009).
- D. Kennedy, The Roman Army in Jordan (2004).